Act as a senior product engineer. Turn {{page_or_feature}} into a multi-step wizard in my {{tech_stack}} project, collecting {{data_to_store}}. Reuse existing form components and validation library. Show me the step plan before building. Steps: - 3 to 6 steps, grouped by topic, asking only what's needed now - conditional steps skip cleanly and the step count updates - each step has its own URL, so Back, refresh and deep links work - a final Review step lists every answer with an Edit link back to its step Progress: an ordered list of steps with aria-current="step" and a heading like "Step 2 of 4: Business details". 360: a compact "2 of 4" with a thin bar; 768 and 1280: full step labels. Completed steps are clickable; future ones aren't. Saving: - save a draft to the server after each step (or locally for signed-out users, with a note saying so), and show "Saved 2 minutes ago" - a resume link, plus a "Continue where you left off" prompt on return - never ask for the same information twice (WCAG 2.2 redundant entry); prefill what we know - warn before any session timeout and let people extend it Validation: per step on Next, then on blur for fields already touched; an error summary at the top with links to each field, focus moved to it; the server validates everything again on submit. Submit: idempotent with an idempotency key; button disabled with a spinner while sending; success page with a reference number; a failure keeps everything and offers Retry. Layout: form max 640px, labels above fields, inputs 48px tall at 16px text; at 1280 an optional summary sidebar of 4 columns. Back on the left, Next on the right; stacked full width at 360 with Next on top. Focus moves to the step heading on each change. Motion: 200ms cross-fade between steps; none under prefers-reduced-motion. Avoid: a progress bar that lies, a disabled Next with no reason, losing answers on refresh, putting every field on step one.